[PATCH] D144386: [RISCV] Use a smaller VL when interleaving fixed vectors

[Luke Lau via Phabricator via llvm-commits]

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Interleaves generated with vwaddu.vv and vwmaccu.vx were using VLs that
were twice the number of elements actually needed in the vector.
This also pulls the interleaving logic out into its own function so it
can be reused by later patches, and adapts it for scalable vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144386

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/common-shuffle-patterns.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-fp-interleave.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-interleave.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-shuffles.ll
  llvm/test/CodeGen/RISCV/rvv/interleave-crash.ll

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